Lock casing



Jan. 16, 1951 Filed Sept. 24, 1946 F. lc HEYER Y 2,538,6 88

ATTORNEY F. K. HEYER LOCK CASING 5 Sheets-Sheet 2 Filed Sept. 24, 1945 ATTORNEY Jqn. 16, 1951 j F. K HEYER 2,533,688

Loox cAsINc. Y

Filed sept.' 24.1946 v ssheets-sneet s INVENTOR ATTORNEY F. K. HEYER LOCK CASING Jan. 16, 1951 5 Sheets-Sheet 4 Filed Sept. 24, 1946 mi m 9M s@ ww ow @van n N@ M A atented Jan. i6, 1951 YLoox cAsmG Frederic K. Heyer, Stamford, Conn., assignor to The Yale & Towne Manufacturing Company, Stamford, Conn., a, corporation of Connecticut Application September 24, 1946, Serial No. 698,936

` 19 Claims. (Cl. 292-337) l This invention relates to a lock of the tubular type. Tubular locks areso called because they generally comprise tubular or near tubular parts adapted for insertion into bores formed in a. door. f course, certain features of my lock mecham may be utilized in locks of other types, such' as mortise locks, and the invention sho, therefore, not be limited to tubular locks.

lt is the object of my invention to contribute a lock that may be assembled with great ease, and be capable of application to a door by persons having relatively little s and little knowledge of lock mechanisms.

As one feature 'of my invention, l provide a lock having. wt l term a rollback easing and a latchbolt l; all as is quite coon in the tubular lock art. l provide extremely novel means for assembling the two casings relatively to one another and relatively to a door in which are formed bores for the casings. As a particular feature of this part of the invention, I mount on one of the casings a detent'member that is movable relatively thereto and is adapted for movement into position relatively to the other casing for locking the two casings in assembled relation. As a more detailed feature of this portion of the invention, I prefer to mount the movable member on the roll back casing, and I preferably provide means movable incidental to the first lock operation for moving the detent means .into locking position for locking the casings tofull motion preferably limited by the said means.

As a stillfurther feature of my invention, I utilize novel rose supporting means adapted for ready assembly to the roll back casing of my lock, and adapted to maintain the rollback casing in position relatively to the door in which it is mounted. Still a further feature of the invention resides in the novel operating relationship between meansl in the rollback casing and the latchbolt operating means whereby the two means are brought together upon assembly of the' two caslngs of my lock in the door.

I have thus outlined rather broadly the more important features of my invention in order that the detailed description thereof that follows may be better understood, and in order that my contribution to the art may be better appreciated. There are, of course, additional features of my invention that will be described hereinafter and which will form the subject of fthe claims aption within the scope of the claims appended thereto.

. Referring now to the drawings, Fig. i is a hor izontal section through a door showing the two bores therein and the lock assembled relatively thereto. Fig. 2 is an exploded view of the an parts of Fig. l. Fig. 3 is a detailed and enlarged exploded view of the parts of my lock mechanism. lFig 4 is a vertical section through my lock mechanism, showing it assembled relatively to a door. Fig. 5 is a partial section and plan View of my mechanism. Fig. 8

is a section taken along lines S-t of Fig. 4. Fig.

, 7 is an exploded view of those parts of the locking combination utilized for locking the two casings in assembled relation. Fig. 8 is a view of parts of Fig. 7 in assembled position. Figs. 9, l0. 11 are views taken along lines 9 9, ill-l0, and

' ll-ii respectively of Fig. 4. Fig. 12 is an exthe bore Il.

ploded perspective view of the sleeves and the knob operating piece controlled thereby.

Referring now more particularly to the drawings, and more especially Figs; 1, 2, and 3, the door to which my lock is applied is designated by reference letter D, and has therein a horizontal bore Il extending transversely from side to side of the door, and a second bore i2 extending inwardly from the edge of the door toward The inner knob of the lock is designated by reference numeral i3 and is adapted for rotation relatively to a rose I4. The outer knob is designated by reference numeral i5 and rotates relatively to an outer rose I6. The rollback casing is designated generally by reference numeral Il, while the latchbolt casing is designated by reference numeral I8.

For a description of the latchbolt casing i8 and the parts therein, reference should be had to Figs. 3, 5, and 6. In those figures the casing is shown formed of two parts I9 held together in assembled relation by suitable means and also by a front decorative piece 20, each of the halves i9 having for that purpose a flange 2i over' assacsa 3 which is staked metal from the iront 26, as-is common in this art. Mounted within the casing` I8 formed by the two halves i9, is a latchbolt 22 spring propelled outwardly into its position of Figs. and 6 by a spring 23 itted about a pin 26 extending from one of the casing halves I9 into a bore 25 of the latchbolt.

A pin 26 extends crosswise between the two parts I9 of the casing I8, and rotatably mounted on this pin is a walking beam 21. One end of this walking beam presses against an upwardly bent lug portion 28 of a slide piece 29, the other end of the slide piece 29 being upwardly bent at 36 and adapted to fit within a slot 3i of the latchbolt 22. The upper or other end of the walking beam 21, as seen in Fig. 6, is designated by reference numeral 32, and is adapted to coact with the end surface 33 of a push piece 34 mounted for sliding movement within the latchbolt casing I8. The normal positioning of the parts is as illustrated in Fig. 6, with the latchbolt 22 held projected by the spring 23, and with the walking beam 21 adapted for pivotal movement by outward pushing of the push piece 34. I shall now describe the construction of the rollback casing i1 and the parts therein contained.

The rollback casing I1 is preferably formed of two substantially duplicate parts 35 and 36. Each part 35, 36 is formed with a sleeve-like portion 31 threaded at 38 and having a longitudinally extending rib 39 as best seen in Figs. 9, l0, and 11. Each part 35, 36 is further formed with a relatively shallow cup-like portion 40, and each portion 46 has a series of lugs 4I as probably best seen in Figs. 2 and 3. A simple curved thin spring-like securing member 42 is formed with a series of square holes whereby it may be snapped around the two portions 40 and over the several lugs 4I so as to unite the two parts 35, 36 and to form the central rollback containing chamber of my lock.

Mounted in the right hand part 35 of the rollback casing I1, as selen in Fig. 4, is what I term a spindle operator 43, shown partially in perspective in Fig. 12 and again in Fig. '1. 'Ihe particular part is also shown in -section in Figs. 9, 10,

and 11. The extreme left end of the spindle operator 43 is of such size as to extend into an opening of the portion 40 of the right hand haii 35 of the rollback casing I1, the said left end terminating in a series of lugs 44 adapted to be riveted into assembled relation to a plate 45 best seen in Fig. '1. Plate 45 is formed with a pair of lugs 46 adapted for coaction with opposed surfaces 41 of radial inwardly projecting lugs 48 of a ring 49. Ring 49 is equipped with laterally inward struck portions 50 fitted into notches 5I of a detent sleeve 52, preferably formed oi a single piece of sheet metal as is well seen in Fig. 7.

Detent sleeve 52 is of such size as to it snugly against the inner surface of the rollback chamber formed by the two portions 40 of the parts 35, 36 comprising the rollback casing I1. The detent sleeve 52 is adapted for rotation relatively to casing I1 by the ring 49 through operation oi the plate 45. Plate 45 is, of course, actuated by the spindle operator 43 under conditions to be indicated presently. At the left side of the rollback casing I1 as viewed in Fig. 4, there is a spindle operator 43a similar in construction to the spindle operator 43, but diilering therefrom in certain respects as will be made apparent presently. Spindle operator 43a is adapted to rotate a plate 45a similar to plate 45 and through the said plate will move a ring 49a similar to 4 ring 49 actuated by the spindle operator 43. However, the ring 49 is formedl as shown best in Figs. 4 and '1 with an inwardly tuned lug 53 extending through a slot 54 in the left hand casing portion 40. The purpose of the lug 53 will be made apparent shortly.

. A spindle 55 is housed within the square bores 59 to form an opening 60 in alignment with the opening 58 of the detent sleeve 52 when the sleeve is in its release position. Therefore, when the detent sleeve 52 is in its release position of Figs. 3 and 7, it is possible to insert the latchbolt casing I8 inwardly of the door bore I2, bringing the U-shaped ends I9a of each of the parts I9 into the rollback chamber of the rollback casing I1.

i A groove 6I is formed on the outer surface oi.'

each of the U-shaped ends I9a of the parts I8, and into the said grooves are adapted to rotate locking surfaces 63 of the detent sleeve 52. Thus, after the latchbolt casing I6 is put into assembled relation to rollback casing I1, one or the other of the knobs I3, I5 is rotated, and one oi the plates 45, '45a will be rotated therewith to bring about a rotation of one of the rings 49, 49a and a consequent rotation of the detent sleeve 52. Rotation of the detent sleeve in a counter-clockwise direction in Fig. '1 will serve to move the locking surfaces 63 thereof into the grooves 6I, as is best seen in Fig. 8.

It will be noted that `the counter-clockwise locking rotation of the detent sleeve 52 through ring 49 and plate 45 is limited to the possible movement of the spindle operator 43. This possible movement is controlled by the rib 39 of sleeve 31 of casing part 35 coacting with a shoulder 64 on the spindle operator 43, or through other means to be described presently.

The limiting of rotation of the spindle operator 43 is arranged so that While the spindle operator 43 is capable of moving the detent sleeve 52 to interlock the latchbolt and rollback casings, the said spindle operator 43 is not capable of effecting an unlocking movement of the detent sleeve the lugs 46 of plate 45 rotatable with spindlev operator 43. Thus, as seen in Fig. 8, the lugs 46 must rotate a considerable distance clockwise from the surfaces 41 with which they are in contact after interlocking the casings I1, I8 in Fig. 8 in order to impinge against the other surfaces 41 to bring about a clockwise rotation of the detent sleeve 52. The rib 39 coacting with the left hand shoulder 64 in Fig. '1 will, of course, prevent such extensive clockwise rotation of the spindle operator 43. Therefore, for moving the detent sleeve 52 into its release position of Fig. 7, reliance must be had on the inwardly extending lug 53 of the ring 49a to which reference has been made. Thus, to disassemble the parts, it is merely necessary to insert a tool into proper relation to the lug 53 and to rotate the said lug and therefore the ring 49a andthe detent` sleeve 52 back to the position of Fig. '7. Lug 53 is accessible only from the inside after removal of the inside rose I4 and knob I3.

'I'he outer knob I5 is preferably pinned to the spindle operator 43 by -a pin 65 that is inaccessible when the outside knob is assembled to the lock. .The inner knob I3 is formed with a bore-66 that is adapted to coact with the end lI1 of a plunger 68 housed within the spindle operator 43a and urged outwardlythereof by a spring 69. A bore be eliminated. For the purpose, I use a control ring 1I shown best in Fig. 12, and a second control ring 12, also best shown in Fig. 12. These rings are adapted to be tted about the spindle operator 43, as is clearly shown in the drawings. A single spring 13 is formed with one end 14 adapted toiit in a notch 15 of ring 1I, while its other end 16 fits in a notch 11 of ring 12. When the two rings and the spring are assembled on the spindle operator 43 with the spring wound slightly, the shoulder 18 of the ring 1| will fit against the lug 19 of the spindle operator 43 with the ring 1I tending to rotate clockwise as shown by the arrow in Fig. l2. Simultaneously, the ring 12 i will tend to rotate counter-clockwise with its surface pressing against the lug 8| of operator 43. At the same time, the surface -82 of ring 1| will lie on the left side of the rib 39 as seen in dotted lines in Fig. 12 while the surface 83 of the ring 12 will lie at the right hand side of the rib 39.

Let us see what happens if the spindle operator 43 is rotated counter-clockwise in Figs. 9, 10, 11, and 12. The lug 19 will impinge against the surface 18 of the ring 1I and will rotate that ring against the force of the spring 13 tending to press it in the direction of the right arrow in with inwardly extending lugs 81 adapted to^lieatively to the said bore -I I.

internally threaded at 89, is then inserted into relation to the rib 39 for effective operation as aneady set forth. The casing han as is positioned with its rib 39a rotated 180 relatively to. the rib 39. The coaction otherwise between the Y spin dle operator 43a and the rib 39a, together with Vthe operation ofthe left hand assembly of rings 1I, 12 is exactly the same as in the-right han aembly shown in Fig. 4.

When the two casing parts 35, 36 are assembled A as already set forth, a pair of rose supports 88' are then slipped over the sleeve portions 31 of the two casing parts and against the sides of the door. Each of the rose supports 86 is formed against the surface of the bore II for the purpose of centering theentire lock assembly 'rel- A locking nut 88,

threaded engagement with the threads 38 of each of the casing portions 35. 36 and-is driven hom to secure the rollback casing rmly within the bore II and in centered relation thereto, all as will be quite apparent to those skilled in the art. In order to facilitate therotation of the locking nuts 88 into position, these nutsare castellated at 92 and a series of lugs 93 are struck inwardly.

from the rose supports 86. By merely placing a screw driver in position against a lug 93 and exerting a leverage action against one of the teeth of the castellated portions 92, it is possible to rotate the locking nuts 88.

Roses I4, I6 are adapted to be fastened to each of the rose supports 86'. For the particular purpose, each rose is formed with inwardly struck portions 9i that are really bumps and Fig. 12. Therefore, the counter-clockwise rotaf against thespring 13 tending to wind it throughthe counter-clockwise rotation of the ring 1I will be accepted by the ring 12 through the pressing of its surface 83 against the rib 39.

Let us say that it is desired to rotate the spindle operator 43 in a clockwise direction in Figs. 9 to 12 inclusive. The lug 8| of operator 43 will then impinge against the surface 80 of ring 12 and will rotate the ring 12 in a clockwise direction opposite to the normal direction in which the said ring is pressed by spring 13 and shown by the left arrow in Fig. 12. Therefore, clockwise rotation of the spindle operator 43 is resisted by the spring 13. The torque of the spring is accepted by ring 1I through its surface -82 lying against rib 39. As soon as the surface 85 of ring 12 is brought against the rib 39, further clockwise rotation oi' the spindle operator 43 is prevented. The assembly of the two rings 1|,-12 on the spindle operator 43 is, of course, extremely simple, and this assembly is brought about -with the spring 13 wound to a limited degree, so that there will be 'some initial pressure between the surfaces 18, 89

lare adapted to snap over the rims of the rose supports 86 as probably best seen in Fig. 4.

- I believe that it will be helpful to explain step and +.he rose' I6 will be loose about the knob while the right hand locking nut 88 will be threaded somewhat on the threads 38 of the por -tion 35. The left hand knob i3 and the left hand rose I4, together with the left hand locking nut 88, will not be in place. In other words, the lock parts will be somewhat in the position illustrated in Figs. 2 and 3.

The right hand knob I5 together with the right hand rose and the rollback casing I1 may then be inserted in the direction of the arrow of Fig. 2 into the bore II. Now the left hand rose support 86 is applied and the left hand locking nut 88 is rotated into the position of Fig. 4l. Just previously to this last operation, the right handlocking nut 88 is moved into the position o'f Fig. e. It is now possible to move the latchbolt casing I8 into the bore I2 of the door so as to carry the U-shaped ends I9a of the latchbolt casing parts I9 into the opening 60 of the rollback casing I1 and inwardly of the cut out portion 58 of the detent sleeve 52. By merely rotating the knob I5 in a counter-clockwise direction, the plate 45, as best seen in Figs. 7 and 8, will cause the ring 49 to rotate the detent sleeve 52 and will carry the locking surfaces 63 thereoi.I into the grooves 6I of the ends Isa of the latchbolt casing I8.

It will be noted that the mere insertion of the latchbolt casing I8 into assembled relation to rollback easing I1 brings the push piece 34 into effective operating relation to rollback 5l. Clockwise or counter-clockwise rotation of the rollback 61 by spindle 55'will then retract the latchbolt through operation of the Walking beam 21.

and I6 into assembled -relation to rose supports 86, the bumps 9| being effective for this purpose. Now the left hand knob I3 isr moved into place with the pin 68 spring pressed into the bore SS of the knob so as to secure the knob to the left hand spindle'operator 43a for rotating the spindle-and to prevent endwise removal therefrom.

I believe thatI the separation of the casings I1 and I8 through release rotation of sleeve 52 by latchbolt of said latchbolt casing, a sleeve-likedetent rotatably mounted on said rollback casing and cut away to allow movement of a part of the latchbolt casing into the rollback casing, rotation It is now merely necessary to snap the two roses Il of said detent then moving parts thereof into slots of said latchbolt casing to interlock said casings.

2. In a lock of the class described, a rollback casing oi.' the type adapted to be positioned in-a transverse bore extending through a door, a v

latchbolt casing containing a latchbolt and adapted to `be positioned-in a bore running from the edge of the door to said transverse bore and to be 'assembled to said rollback casing so that rollback means in said casing will actuate the latchbolt of said latchbolt casing, detent means on said rollback casing adapted for movement to lock said latchbolt casing to said rollback casing. a. rollback in said rollback casing, and means operated incidental to the rotation of said rollback to move said detent means to locking position.

3. In a lock of the class described, a rollback casing of the type adapted to be positioned in a transverse bore extending. through a door, a latchbolt casing containing a latchbolt and adapted to be positioned in -a bore running from the edge of the door to said transverse bore and to be assembled to said rollback casing within the bores of said door so that rollback means in said casing will actuate the latchbolt of said latchbolt casing, detent means on said rollback casing adapted for movement to lock said latchbolt casing to said rollback casing, rollback means in said rollback casing, and a one-way means of coaction between said rollback means and said detent means whereby said rollback means when moved in one direction moves said detent means to its locking position and when returned from said movement leaves said detent means in its locking position.

`4. In a lock of the class described, a rollback casing of the type adapted to be positioned in a transverse bore extending through a door. a latchbolt casing containing a latchbolt and adapted to be positioned in a bore running from the edge of the door to said transverse bore and to be assembled to said rollback casing so that rollback means in said casing will actuaitev the latchbolt of said latchbolt casing, a sleeve-like detent rotatably mountedin said rollback casini and cut away to allow movement oi' a part o1' the latchbolt casing into the rollback casing, rotation of said detent then moving parts thereoi into slots of said latchbolt casing to interlock said casings, a rollback rotatably mounted in said latchbolt casing, and means operated incidentally to the rotation of said rollback to move sai detent into locking position.

5. Ina lock o! the class described, a rollback casing of the type adapted to be positioned in a transverse bore extending through a door, a latchbolt casing containing a latchbolt and adapted to be positioned in a bore running from' the edge of the door to saidtransverse bore'and to be assembled to said rollback casing so that rollback means in said casing will actuate the latchbolt of said latchbolt casing, a sleeve-like detent rotatably mounted in said rollback casing and cut away to allow movement of a part of the latchbolt casing into the rollback casing, rotation of said detent then moving parts thereof -into slots of, said latchbolt casing to interlock said casings, a rollback rotatably mounted in said latchbolt casing, and a one-way operating means actuated incidentally .to rotation of said rollback in one direction to move said detent to its locking position, the return movement of said rollback leaving said detent in its locking position. 6. In a lock of the class described, a rollback casing of the type adapted to be positioned in a transverse bore extending through a door, a. latchbolt` casing containing a latchbolt and adapted lto be positioned in a bore running from the edge of the door to said transverse bore and to be assembled to said rollback casing so that rollback means in said casing willy actuate the latchbolt of said latchbolt casing, a sleeve-like detent rotatably mounted in said rollback cas-- ing and cut away to allow movement of apart of the latchbolt casing into the rollback casing, rotation of said detent then moving parts thereof into slots of said latchbolt casing to interlock said casings, and means whereby said sleeve-like detent is rotated to interlocking position.

'7. In a lock of the class described, a rollback Acasing of the type adapted to be positioned in a transverse bore extending through Va door, a

Alatchbolt casing containing a latchbolt-and adapted to be positioned in a bore running from the edge of the door to said transverse bore and to be assembled to said rollback casing so that rollback means in said casing will actuate the latchbolt of said latchbolt casing, a sleeve-like detent rotatably mounted in said rollback casing and cut away .to allow movement of a part of the latchbolt casing into the rollback casing, rotation of said detent then moving parts thereof into slots of said latchbolt casing to interlock said. casings, and means extending from said detent outwardly of said rollback casing and adapted for actuation to rotate said detent.

8. In a lock of the class described, a rollback casing of the type adapted to be positioned in a transverse bore extending through a door, a. latchbolt casing containing a latchbolt and adapted to be positioned in a bore running from the edge of the door to said transverse bore and to be w 9 e sembled to said rollback casing so that rollback means in said casing will actuate the latchbolt of said latchbolt casing. a detent rotatably mounted in said rollback casing and movable into position to interlock said casings. and means extending from said detent outwardly of 'said rollback casing and adapted for actuation to. rotate said detent.

9. In a-iock or the class described, a tubumr roiif back casing ofthe type adapted to be positionedlatchbolt casing into said tubular rollback casing, rotation of said cylindrical sleeve then moving parts thereof into slots of said latchbolt casing to interlock said casings.

10. In a lock of the class casing, a latchbolt casing containing a latchbolt and adapted to be assembled to said rollback described, a rollback assaosa an operator rotatably mounted relatively to said casing, a pair of cntrol members for yieldingly resisting rotation of said operator relatively to said casing, a single spring pressing said control members in opposed directions against portions of said operator, said operator through said portions moving one ofsaid control members against the force of said spring when rotated in one direction. through said portions moving the other ot said control members against the force of said spring when rotated in a reverse direction, and

. means coacting with one or the other of saidlcontrol members to accept the torque of said spring Y when said operator is moved in one` or the other direction.

14. In a lock of the class described, a casing, an

operator rotatably mounted relatively to said casing, a pair of control members for yieldingly resisting rotation of said operator relatively to said casing so that rollback means in said casing will actuate the latchbolt of said latchbolt casing. a sleeve-like detent rotatably mounted in said roliback casing and'cut away to allow movement of a part of the latchbolt casing into the rollback casing, rotation of said detent then moving parte thereof into slots of said latchbolt casing to interlock said casings, and means whereby said sleeve-like detent is rotated to interlocking position.

casing, spring means .pressing said control members in opposed directions against portions of said operator, said operator through said portions moving one of said control members against the force oi' said spring means when rotated in one direction, and through said portions moving the other of said control members against the force of said spring means when rotated in a reverse direction. and limit means limiting the movement oi' each of said control members'whereby to limit rotation of said operator in either direction.

l15. In a lock of the class described, a casing, an

operator rotatably mounted relatively to said cas- 11. Ina lock of the class described, a tubular rollback casing of the type adapted to be positioned in a transverse b ore extending through a door, a latchbolt casing containing alatchbolt and adapted to be positioned in a bore running from the edge of the door to said'transverse bore and to be assembled tosaid rollback casing so.

that rollback means in said casing will actuate the latchbolt of said latchbolt casing, a portion l of a cylindrical sleeve fitted against the inside cylindrical surface of said tubular Irollback casing and cut away to allow movement of the end of the latchbolt casing into said tubular rollback casing, rotation of said cylindrical sleeve then A moving parts thereof into slots of said latchbolt casing to interlock said casings,a rollback in said tubular rollback casing, a spindle for rotating said rollback, and one-way actuating means actuated incidental to the rotation of said spindle and rollback in one direction for moving said cylindrical sleeve to its casing interlocking position', the actuation of said one-way actuating means in a reverse direction leaving said sleeve in its interlocking position.

12. In a lock of the class described, a casing,

an operator rotatably mounted relatively to said casing, a pair of control members for yieldingly resisting rotation of said operator relatively to said casing, spring means pressing said control members in opposed directions against portions ing, a pair oi.' controlmembers for yieldingly resisting rotation of said operator relatively to said casing, a single spring pressing said control members in opposed directions against portions of said operator, said operator through said portions moving one of said control members against lthe force oi said spring when rotated in one direction, and through said portions movin-g the other of said control members against the force of said spring when rotated in a reverse direction, and a rib extending between opposed surfaces of each of said control members for coacting with a sur face of one or the other of said control members to accept the torque of said spring when said operator is moved in one or the other direction.

16. In a lock of the class described, a casing, an operator for rotating lock mechanism within said casing, means mounting said operator for rotation relatively to said casing, a pair of control sleeves positioned about said operator, spring means pressing said sleeves in opposite directions with each sleeve abutting a' surface integral with said operator, whereby rotation of the-operator in either of opposite directions is resisted by one of said control sleeves.

1'1. In a lock of the class described, a casing, an operator for rotating lock mechanism within said casing, means mounting said operator for rotation relatively to said casing, a pair of control sleeves positioned about said operator, a

' single spring pressing said sleeves in opposite of said operator, said operator through said -portions moving one of said control members against the force of said spring means when rotated in one direction, and through said portions moving the other of said control members against the torce of said spring means when rotated in a reverse direction.

13. In a lock of the classdescribed. a

directions with each sleeve abutting a surface integral with said operator, whereby rotation of 'the operator in either-of opposite directions is resisted by one of said control sleeves, and means xed relatively to said casing coacting with one or the other of said control sleeves to accept the torque of said spring when said operator is moved in one or the other direction.

18. In a. lock of the class described, a casing, an operator for rotating lock mechanism within -said casing, means mounting said operator for casing 16 rotation relatively to said casing. a pair of control sleeves positioned about said operator, spring means pressing said sleeves in opposite directions with each sleeve abutting a surface integral with said operator, whereby rotation of the operator in either of opposite directions is resisted by one of. said control sleeves, and limit stops on said casing cooperable with said sleeves for limiting their rotation by said operator to a predetermined degree in said opposite directions, and for preventing rotation -of each sleeve in one direction.

19. In a lock of the class described, a casing, a cylindrical operator for rotating lock mechanism within said casing, means mounting said operator for rotary movement relatively to said casing, a pair'of control sleeves rotatable about said cylindrical operator, a springpressing said controlsleeves in opposed directions relatively to said cylindrical casing, cooperating stop surfaces on said cylindrical operator and on each of said sleeves, and stop means on said casing cooperable with spaced stop means on each of said sleeves for preventing rotation of each sleeve in` one direction relatively to me waningV while' limiting the rotation of each sleeve in a reverse direction.

FREDERIC K. HEYER.

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Schlage- Nov. 27, 1945 

